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NOTES FOR UNIX LIKE PLATFORMS
=============================
For Unix/POSIX runtime systems on Windows, please see NOTES.WIN.
Shared libraries and installation in non-standard locations
-----------------------------------------------------------
Binaries on Unix variants expect to find shared libraries in standard
locations, such as /usr/lib, /usr/local/lib and some other locations
configured in the system (for example /etc/ld.so.conf on some systems).
If the libraries are installed in non-standard locations, binaries
will not find them and therefore fail to run unless they get a bit of
help from a defined RPATH or RUNPATH. This can be applied by adding
the appropriate linker flags to the configuration command, such as
this (/usr/local/ssl was the default location for OpenSSL installation
in versions before 1.1.0):
$ ./config --prefix=/usr/local/ssl --openssldir=/usr/local/ssl \
-Wl,-rpath,/usr/local/ssl/lib
Because the actual library location may vary further (for example on
multilib installations), there is a convenience variable in Makefile
that holds the exact installation directory and that can be used like
this:
$ ./config --prefix=/usr/local/ssl --openssldir=/usr/local/ssl \
-Wl,-rpath,'$(LIBRPATH)'
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